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PPC64: Add support for ldbrx and stdbrx instructions 

These instructions for loading and storing byte-swapped 64-bit values have
been introduced in PowerISA 2.06.

Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Thomas Huth 2012-02-27 17:18:08 +00:00 committed by Alexander Graf
parent b5aec39672
commit cd6e932014
3 changed files with 47 additions and 11 deletions
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4
target-ppc/cpu.h
View File

@ -1918,8 +1918,10 @@ enum {
PPC2_DFP = 0x0000000000000004ULL,
/* Embedded.Processor Control */
PPC2_PRCNTL = 0x0000000000000008ULL,
/* Byte-reversed, indexed, double-word load and store */
PPC2_DBRX = 0x0000000000000010ULL,
#define PPC_TCG_INSNS2 (PPC2_BOOKE206 | PPC2_PRCNTL)
#define PPC_TCG_INSNS2 (PPC2_BOOKE206 | PPC2_PRCNTL | PPC2_DBRX)
};
/*****************************************************************************/

52
target-ppc/translate.c
View File

@ -2650,7 +2650,7 @@ static void glue(gen_, name##ux)(DisasContext *ctx)
tcg_temp_free(EA); \
}
#define GEN_LDX(name, ldop, opc2, opc3, type) \
#define GEN_LDX_E(name, ldop, opc2, opc3, type, type2) \
static void glue(gen_, name##x)(DisasContext *ctx) \
{ \
TCGv EA; \
@ -2660,6 +2660,8 @@ static void glue(gen_, name##x)(DisasContext *ctx) \
gen_qemu_##ldop(ctx, cpu_gpr[rD(ctx->opcode)], EA); \
tcg_temp_free(EA); \
}
#define GEN_LDX(name, ldop, opc2, opc3, type) \
GEN_LDX_E(name, ldop, opc2, opc3, type, PPC_NONE)
#define GEN_LDS(name, ldop, op, type) \
GEN_LD(name, ldop, op | 0x20, type); \
@ -2793,8 +2795,8 @@ static void glue(gen_, name##ux)(DisasContext *ctx)
tcg_temp_free(EA); \
}
#define GEN_STX(name, stop, opc2, opc3, type) \
static void glue(gen_, name##x)(DisasContext *ctx) \
#define GEN_STX_E(name, stop, opc2, opc3, type, type2) \
static void glue(gen_, name##x)(DisasContext *ctx) \
{ \
TCGv EA; \
gen_set_access_type(ctx, ACCESS_INT); \
@ -2803,6 +2805,8 @@ static void glue(gen_, name##x)(DisasContext *ctx)
gen_qemu_##stop(ctx, cpu_gpr[rS(ctx->opcode)], EA); \
tcg_temp_free(EA); \
}
#define GEN_STX(name, stop, opc2, opc3, type) \
GEN_STX_E(name, stop, opc2, opc3, type, PPC_NONE)
#define GEN_STS(name, stop, op, type) \
GEN_ST(name, stop, op | 0x20, type); \
@ -2891,6 +2895,18 @@ static inline void gen_qemu_ld32ur(DisasContext *ctx, TCGv arg1, TCGv arg2)
}
GEN_LDX(lwbr, ld32ur, 0x16, 0x10, PPC_INTEGER);
#if defined(TARGET_PPC64)
/* ldbrx */
static inline void gen_qemu_ld64ur(DisasContext *ctx, TCGv arg1, TCGv arg2)
{
tcg_gen_qemu_ld64(arg1, arg2, ctx->mem_idx);
if (likely(!ctx->le_mode)) {
tcg_gen_bswap64_tl(arg1, arg1);
}
}
GEN_LDX_E(ldbr, ld64ur, 0x14, 0x10, PPC_NONE, PPC2_DBRX);
#endif /* TARGET_PPC64 */
/* sthbrx */
static inline void gen_qemu_st16r(DisasContext *ctx, TCGv arg1, TCGv arg2)
{
@ -2921,6 +2937,22 @@ static inline void gen_qemu_st32r(DisasContext *ctx, TCGv arg1, TCGv arg2)
}
GEN_STX(stwbr, st32r, 0x16, 0x14, PPC_INTEGER);
#if defined(TARGET_PPC64)
/* stdbrx */
static inline void gen_qemu_st64r(DisasContext *ctx, TCGv arg1, TCGv arg2)
{
if (likely(!ctx->le_mode)) {
TCGv t0 = tcg_temp_new();
tcg_gen_bswap64_tl(t0, arg1);
tcg_gen_qemu_st64(t0, arg2, ctx->mem_idx);
tcg_temp_free(t0);
} else {
tcg_gen_qemu_st64(arg1, arg2, ctx->mem_idx);
}
}
GEN_STX_E(stdbr, st64r, 0x14, 0x14, PPC_NONE, PPC2_DBRX);
#endif /* TARGET_PPC64 */
/*** Integer load and store multiple ***/
/* lmw */
@ -8818,7 +8850,7 @@ GEN_FLOAT_B(neg, 0x08, 0x01, 0, PPC_FLOAT),
#undef GEN_LD
#undef GEN_LDU
#undef GEN_LDUX
#undef GEN_LDX
#undef GEN_LDX_E
#undef GEN_LDS
#define GEN_LD(name, ldop, opc, type) \
GEN_HANDLER(name, opc, 0xFF, 0xFF, 0x00000000, type),
@ -8826,8 +8858,8 @@ GEN_HANDLER(name, opc, 0xFF, 0xFF, 0x00000000, type),
GEN_HANDLER(name##u, opc, 0xFF, 0xFF, 0x00000000, type),
#define GEN_LDUX(name, ldop, opc2, opc3, type) \
GEN_HANDLER(name##ux, 0x1F, opc2, opc3, 0x00000001, type),
#define GEN_LDX(name, ldop, opc2, opc3, type) \
GEN_HANDLER(name##x, 0x1F, opc2, opc3, 0x00000001, type),
#define GEN_LDX_E(name, ldop, opc2, opc3, type, type2) \
GEN_HANDLER_E(name##x, 0x1F, opc2, opc3, 0x00000001, type, type2),
#define GEN_LDS(name, ldop, op, type) \
GEN_LD(name, ldop, op | 0x20, type) \
GEN_LDU(name, ldop, op | 0x21, type) \
@ -8843,6 +8875,7 @@ GEN_LDUX(lwa, ld32s, 0x15, 0x0B, PPC_64B)
GEN_LDX(lwa, ld32s, 0x15, 0x0A, PPC_64B)
GEN_LDUX(ld, ld64, 0x15, 0x01, PPC_64B)
GEN_LDX(ld, ld64, 0x15, 0x00, PPC_64B)
GEN_LDX_E(ldbr, ld64ur, 0x14, 0x10, PPC_NONE, PPC2_DBRX)
#endif
GEN_LDX(lhbr, ld16ur, 0x16, 0x18, PPC_INTEGER)
GEN_LDX(lwbr, ld32ur, 0x16, 0x10, PPC_INTEGER)
@ -8850,7 +8883,7 @@ GEN_LDX(lwbr, ld32ur, 0x16, 0x10, PPC_INTEGER)
#undef GEN_ST
#undef GEN_STU
#undef GEN_STUX
#undef GEN_STX
#undef GEN_STX_E
#undef GEN_STS
#define GEN_ST(name, stop, opc, type) \
GEN_HANDLER(name, opc, 0xFF, 0xFF, 0x00000000, type),
@ -8858,8 +8891,8 @@ GEN_HANDLER(name, opc, 0xFF, 0xFF, 0x00000000, type),
GEN_HANDLER(stop##u, opc, 0xFF, 0xFF, 0x00000000, type),
#define GEN_STUX(name, stop, opc2, opc3, type) \
GEN_HANDLER(name##ux, 0x1F, opc2, opc3, 0x00000001, type),
#define GEN_STX(name, stop, opc2, opc3, type) \
GEN_HANDLER(name##x, 0x1F, opc2, opc3, 0x00000001, type),
#define GEN_STX_E(name, stop, opc2, opc3, type, type2) \
GEN_HANDLER_E(name##x, 0x1F, opc2, opc3, 0x00000001, type, type2),
#define GEN_STS(name, stop, op, type) \
GEN_ST(name, stop, op | 0x20, type) \
GEN_STU(name, stop, op | 0x21, type) \
@ -8872,6 +8905,7 @@ GEN_STS(stw, st32, 0x04, PPC_INTEGER)
#if defined(TARGET_PPC64)
GEN_STUX(std, st64, 0x15, 0x05, PPC_64B)
GEN_STX(std, st64, 0x15, 0x04, PPC_64B)
GEN_STX_E(stdbr, st64r, 0x14, 0x14, PPC_NONE, PPC2_DBRX)
#endif
GEN_STX(sthbr, st16r, 0x16, 0x1C, PPC_INTEGER)
GEN_STX(stwbr, st32r, 0x16, 0x14, PPC_INTEGER)

2
target-ppc/translate_init.c
View File

@ -6571,7 +6571,7 @@ static void init_proc_970MP (CPUPPCState *env)
PPC_64B | PPC_ALTIVEC | \
PPC_SEGMENT_64B | PPC_SLBI | \
PPC_POPCNTB | PPC_POPCNTWD)
#define POWERPC_INSNS2_POWER7 (PPC2_VSX | PPC2_DFP)
#define POWERPC_INSNS2_POWER7 (PPC2_VSX | PPC2_DFP | PPC2_DBRX)
#define POWERPC_MSRM_POWER7 (0x800000000204FF36ULL)
#define POWERPC_MMU_POWER7 (POWERPC_MMU_2_06)
#define POWERPC_EXCP_POWER7 (POWERPC_EXCP_POWER7)